A device for breaking up solidified soil without external water source

Abstract

The present application relates to the technical field of civil engineering, and particularly relates to a device for breaking flow state solidified soil without external water source, which comprises an outer cylinder, a cutting assembly is arranged on the outer wall of the outer cylinder, and the cutting assembly is communicated with a water circulation assembly; an inner cylinder is coaxially arranged in the outer cylinder, a cold and heat supply assembly is arranged on the inner cylinder, a refrigeration end of the cold and heat supply assembly is located in an inner cavity of the inner cylinder and is used for condensing and recycling water vapor, and a hot end of the cold and heat supply assembly faces the outer cylinder and is used for heating and dehydrating flow state solidified soil outside the outer cylinder wall; a heat exchange sheet is arranged at the end of the outer cylinder and is inserted into the flow state solidified soil, the heat exchange sheet is connected with the cold and heat supply assembly, and the flow state solidified soil is frozen. The present application can break the flow state solidified soil in a narrow space, will not disturb the surrounding structures, can reduce the influence of mechanical breaking on the surrounding structures, and does not need external water source, so that the flow state solidified soil can be broken in an area where water source is not convenient to access.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, and in particular to a device for non-disturbance breaking up of fluidized solidified soil without the need for an external water source. Background Technology

[0002] Fluidized solidified soil has the advantages of self-compacting, self-leveling, controllable strength, and no need for compaction. It is suitable for filling narrow construction surfaces such as trenches, troughs, pipes, and holes, and has been widely used in municipal and construction fields in recent years.

[0003] However, during the pouring of fluidized solidified soil, if pipe joints or openings are not properly sealed, the fluidized solidified soil may flow into the pipe, or the pouring height may exceed the elevation, necessitating the removal of the fluidized solidified soil. Since fluidized solidified soil filling is often used in confined spaces, commonly used engineering machinery such as excavators are too large to effectively remove the soil in such narrow areas. Furthermore, mechanical excavation methods can easily cause significant disturbance to nearby structures. For example, patent CN110593889A discloses a method for removing slag from municipal pipelines using mechanical excavation. This method easily disturbs the surrounding environment, affecting structural safety and stability. Moreover, the device is also large and cannot meet the requirements for operation in confined spaces. Additionally, the slag deposited inside the pipeline lacks strength, making it difficult for this device to remove the strong fluidized solidified soil.

[0004] Meanwhile, the strength of the fluidized solidified soil commonly used in engineering after hardening is generally 0.3MPa-1MPa. Therefore, simply using a high-pressure water gun to flush it cannot break it up. In addition, high-pressure water gun flushing consumes a lot of water and is greatly restricted by construction conditions. Construction sites often face the problem of inconvenient access to water. For example, a pipe dredging device and pipe dredging and cleaning system disclosed in patent CN103817119 uses a cutting nozzle to dredge pipes. Its main application is pipe dredging. It cannot break up fluidized solidified soil with high strength. In addition, the device requires an external water source and cannot operate when water access is inconvenient.

[0005] Therefore, there is still an urgent need for a device that can break up fluidized solidified soil without requiring an external water source and without disturbance to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a device for non-disturbance demolition of fluidized solidified soil without the need for an external water source, thereby solving the problem of demolition of fluidized solidified soil in confined spaces and the disturbance to surrounding structures caused by mechanical demolition, thus addressing the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides a device for non-disturbance breaking up of fluidized solidified soil without the need for an external water source, comprising:

[0008] The outer cylinder has a cutting assembly on its outer wall for hydraulically cutting the fluidized solidified soil. The cutting assembly is connected to a water circulation assembly located inside the outer cylinder. The water circulation assembly is used to recover the water contained in the fluidized solidified soil.

[0009] An inner cylinder is coaxially disposed inside the outer cylinder. A combined cooling and heating assembly is disposed on the inner cylinder. The cooling end of the combined cooling and heating assembly is located in the inner cavity of the inner cylinder and is used to condense and recover water vapor. The heating end of the combined cooling and heating assembly faces the outer cylinder and is used to heat and dehydrate the fluidized solidified soil on the outer side of the outer cylinder wall.

[0010] A heat exchange plate is disposed at the end of the outer cylinder and inserted into the fluidized solidified soil. The heat exchange plate is connected to the combined cooling and heating assembly to freeze the fluidized solidified soil.

[0011] Preferably, the cutting assembly includes a water supply pipe connected to the water circulation assembly, and a plurality of nozzles are provided on the water supply pipe. The nozzles face the outer wall of the outer cylinder, and the water flow washes away the fluidized solidified soil that has lost its mechanical properties, so as to form mud.

[0012] Preferably, the outer wall of the outer cylinder is provided with a plurality of spray holes 12, the spray holes 12 being arranged corresponding to the nozzle, and the water sprayed from the nozzle passing through the spray holes 12 to flush the fluidized solidified soil that has lost its mechanical properties.

[0013] Preferably, the water circulation assembly includes a piston-equipped water tank disposed in the inner cavity of the outer cylinder, the piston-equipped water tank recovering condensed water in the inner cylinder through a water pump, and the piston-equipped water tank being connected to the water supply pipeline through a high-pressure water pump.

[0014] Preferably, the inner wall of the inner cylinder is provided with a plurality of condensing fins, which assist in the condensation of water vapor in the inner cavity of the inner cylinder.

[0015] Preferably, the combined cooling and heating assembly includes a plurality of thermoelectric cooling chips embedded in the inner cylinder. The cold end of the thermoelectric cooling chip extends into the inner cavity of the inner cylinder and is connected to the heat exchange plate through a heat pipe. The hot end of the thermoelectric cooling chip extends out of the inner cylinder and is fitted with a heat sink for auxiliary heat dissipation.

[0016] Preferably, the combined cooling and heating assembly further includes an electric heating module disposed in the inner cavity of the outer cylinder. The electric heating module is correspondingly disposed in the inner cavity of the outer cylinder with a motor fan module. The motor fan module blows the heat from the electric heating module or the heat sink to heat the fluidized solidified soil on the outer side of the outer cylinder wall.

[0017] Preferably, a connecting plate is fixedly connected to the end of the outer cylinder facing the fluidized solidified soil, and the connecting plate is connected to a connecting cylinder that controls the communication between the inner cylinder and the outside world; a guide plate is fixedly connected to the end of the connecting plate away from the outer cylinder, and the heat pipe passes through the guide plate and is connected to the heat exchange plate for heat exchange.

[0018] Preferably, the guide plate is provided with a plurality of defrosting valves, which connect the spaces on the inner and outer sides of the guide plate.

[0019] Preferably, a positioning plate is provided at the end of the outer cylinder away from the fluidized solidified soil to position the outer cylinder and prevent hot airflow from flowing out from the outer side of the cylinder wall at the tail end.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses a device for non-disturbance demolition of fluidized solidified soil without the need for an external water source. By integrating a water circulation component, a combined cooling and heating component and a heat exchange plate, the device can achieve demolition of fluidized solidified soil while avoiding disturbance to surrounding structures and eliminating the need for an external water source. The heating and cooling unit, with its hot end facing the outer cylinder, heats and dehydrates the fluidized solidified soil, causing it to lose water and increasing matrix suction. This disrupts the cementitious structure within the soil, leading to loss of mechanical properties and a loose, brittle state. The cutting component, located on the outer wall of the cylinder, hydraulically cuts the soil, using high-pressure water jets for physical scouring. The high-pressure water jets directly act on the loose soil, accelerating the formation of slurry. Simultaneously, a water circulation component enables internal water recycling, improving resource utilization. Compared to traditional mechanical demolition methods, this device offers higher demolition efficiency and reduces operating costs through water recycling, meeting energy conservation and environmental protection requirements. It is one of the direct demolition methods for fluidized solidified soil. The water circulation component, located inside the outer cylinder and connected to the cutting component, recovers unreacted pore water within the soil. This pore water, after being heated, transforms into... Water vapor, after condensation, is recycled and used as a source of high-pressure water jets. In areas where water access is inconvenient, such as remote areas and underground projects, it can still be conveniently used for demolition operations, reducing dependence on external water sources and improving operational flexibility and applicability. The inner and outer cylinders are arranged coaxially to form a double-cylinder structure, providing installation space for the combined cooling and heating system. The cooling end of the combined cooling and heating system is located in the inner cavity of the inner cylinder and is used to condense and recover water vapor. When the fluidized solidified soil is heated and evaporates to produce water vapor, the low temperature of the cooling end is transferred to the condenser plate, which condenses the water vapor into liquid water, facilitating subsequent recycling and flushing of the fluidized solidified soil. The heat exchange plate is located at the end of the outer cylinder and inserted into the fluidized solidified soil. The heat exchange plate is connected to the combined cooling and heating system. The combined cooling and heating system cools and transfers cold energy to freeze the fluidized solidified soil around the heat exchange plate, causing the pore water in the fluidized solidified soil to freeze, generating frost heave force and destroying the cemented structure. Through the alternating action of heating at the hot end of the electric heating module and the combined heating and cooling components, and the freezing and thawing of the heat exchange plates, the fluidized solidified soil undergoes processes such as water loss and freeze-thaw cycles, resulting in the destruction of the cemented structure and loss of mechanical properties, thereby achieving demolition. The demolition process does not require strong mechanical impact, avoiding disturbance to surrounding structures, and is suitable for operations in confined spaces, such as around underground pipelines and near building foundations.

[0021] This invention enables the demolition of fluidized solidified soil in confined spaces without disturbing surrounding structures, reducing the impact of mechanical demolition on surrounding structures. Furthermore, it does not require an external water source, making it convenient to demolish fluidized solidified soil in areas where water access is inconvenient. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0023] Figure 1 This is an axial view of the device for non-disturbance breaking up of fluidized solidified soil without the need for an external water source according to the present invention;

[0024] Figure 2 This is a schematic diagram of the device for non-disturbance breaking up of fluidized solidified soil without the need for an external water source, according to the present invention.

[0025] Figure 3 For the present invention Figure 2 A cross-sectional schematic diagram of AA in the middle;

[0026] Figure 4 For the present invention Figure 2 Cross-sectional schematic diagram of BB;

[0027] Figure 5 This is a schematic diagram of the condenser plate of the present invention;

[0028] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Positioning plate; 4. Connecting plate; 5. Connecting cylinder; 6. Guide plate; 7. High-pressure water pump; 8. Jet valve; 9. Water tank with piston; 10. Water supply pipe; 11. Nozzle; 12. Jet hole; 13. Water pumping pipe; 14. Motor fan module; 15. Electric heating module; 16. Semiconductor cooling chip; 17. Heat sink; 18. Condenser; 19. Heat pipe; 20. Thermal insulation material; 21. Heat exchange plate; 22. Return valve; 23. Defrost valve. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 5 As shown, this embodiment provides a device for the non-disturbance breaking of fluidized solidified soil without the need for an external water source, comprising:

[0032] The outer cylinder 1 has a cutting component on its outer wall for hydraulically cutting the fluidized solidified soil. The cutting component is connected to a water circulation component installed inside the outer cylinder 1. The water circulation component is used to recover the water contained in the fluidized solidified soil.

[0033] Inner cylinder 2 is coaxially arranged inside outer cylinder 1. A combined cooling and heating assembly is provided on inner cylinder 2. The cooling end of the combined cooling and heating assembly is located in the inner cavity of inner cylinder 2 and is used to condense and recover water vapor. The heating end of the combined cooling and heating assembly faces outer cylinder 1 and is used to heat and dehydrate the fluidized solidified soil on the outside of the outer cylinder 1.

[0034] Heat exchange plate 21 is installed at the end of the outer cylinder 1 and inserted into the fluidized solidified soil. Heat exchange plate 21 is connected to the combined cooling and heating assembly to freeze the fluidized solidified soil.

[0035] In one embodiment of the present invention, the fluidized solidified soil has the characteristics of low density and large pores. In addition, in order to ensure the workability of the fluidized solidified soil, a large amount of water needs to be added during the preparation of the fluidized solidified soil. Part of the water reacts with the curing agent to become mineral-bound water, and part of the water is still stored in the pores of the fluidized solidified soil after it hardens.

[0036] This invention discloses a device for non-disturbance removal of fluidized solidified soil without the need for an external water source. By integrating a water circulation component, a combined cooling and heating component, and a heat exchange plate 21, the device can remove fluidized solidified soil while avoiding disturbance to surrounding structures and eliminating the need for an external water source. The heating and cooling system's hot end faces the outer cylinder 1, used to heat and dehydrate the fluidized solidified soil. This causes the soil to lose water, increasing matrix suction and disrupting the cementitious structure, resulting in loss of mechanical properties and a loose, brittle state. The cutting component, located on the outer wall of the outer cylinder 1, hydraulically cuts the fluidized solidified soil, using high-pressure water jets for physical scouring. The high-pressure water jets directly act on the mechanically degraded soil, accelerating the formation of slurry. Simultaneously, the water circulation component enables internal water recycling, improving resource utilization. Compared to traditional mechanical demolition methods, this device offers higher demolition efficiency and reduces operating costs through water recycling, meeting energy conservation and environmental protection requirements. It is one of the direct demolition methods for fluidized solidified soil. The water circulation component, located inside the outer cylinder 1 and connected to the cutting component, recovers water contained within the fluidized solidified soil and cools it. After condensation, the water is recycled and used as a source of high-pressure water jets. In areas where water access is inconvenient, such as remote areas and underground projects, it is still convenient to carry out demolition operations, reducing dependence on external water sources and improving the flexibility and applicability of operations. The inner cylinder 2 and the outer cylinder 1 are arranged coaxially to form an inner and outer double cylinder structure, providing installation space for the combined cooling and heating components. The cooling end of the combined cooling and heating components is located in the inner cavity of the inner cylinder 2 and is used to condense and recover water vapor. When the fluidized solidified soil is heated and evaporates to produce water vapor, the cooling end condenses it into liquid water, which is convenient for subsequent recycling and cutting of the fluidized solidified soil. The heat exchange plate 21 is located at the end of the outer cylinder 1 and inserted into the fluidized solidified soil. It is connected to the cold end of the semiconductor cooling plate 16 through the heat pipe 19 to freeze the fluidized solidified soil around the heat exchange plate 21, causing the pore water in the fluidized solidified soil to freeze, generating frost heave force and destroying the cemented structure in the fluidized solidified soil. Through the alternating heating of the electric heating module 15 and the freezing and thawing action of the heat exchange plate 21, the fluidized solidified soil around the heat exchange plate 21 undergoes a freeze-thaw cycle, leading to the destruction of the cemented structure and loss of mechanical properties, thus achieving demolition. The demolition process does not require strong mechanical impact, avoiding disturbance to surrounding structures, and is suitable for operations in confined spaces, such as around underground pipelines or near building foundations. This invention enables the demolition of fluidized solidified soil in confined spaces without disturbing surrounding structures, reducing the impact of mechanical demolition on surrounding structures, and does not require an external water source, making it convenient for demolition of fluidized solidified soil in areas where water access is inconvenient.

[0037] Further optimization of the scheme: The cutting component includes a water supply pipe 10 connected to the water circulation component. Several nozzles 11 are installed on the water supply pipe 10, with the nozzles 11 facing the outer wall of the outer cylinder 1. The sprayed water cuts the fluidized solidified soil that has lost its mechanical properties. The cutting component consists of the water supply pipe 10 and multiple nozzles 11. The nozzles 11 face the outer wall of the outer cylinder 1, spraying high-pressure water onto the fluidized solidified soil. This allows the water flow to be concentrated and targeted in cutting the fluidized solidified soil, improving cutting efficiency and effectiveness. It can more quickly and effectively destroy the structure of the fluidized solidified soil, turning it into slurry that flows out, thereby achieving the removal of the fluidized solidified soil.

[0038] Further optimization of the design involves several injection holes 12 penetrating the outer wall of the outer cylinder 1. These injection holes 12 correspond to nozzles 11, allowing water ejected from the nozzles 11 to be sprayed through the injection holes 12 onto the fluidized solidified soil that has lost its mechanical properties, thus cutting it. The correspondence between the injection holes 12 and nozzles 11 regulates the direction and range of the water flow, ensuring accurate application of the water to the fluidized solidified soil, avoiding water scattering and waste, improving the precision and efficiency of hydraulic cutting, and enhancing the device's ability to break up fluidized solidified soil. Simultaneously, the injection holes 12 facilitate the discharge of heat from the combined cooling and heating system to heat the fluidized solidified soil, improving the uniformity of heating.

[0039] Further optimization of the scheme involves a water circulation component including a piston-equipped water tank 9 located within the inner cavity of the outer cylinder 1. The piston-equipped water tank 9 collects condensed water from the inner cylinder 2 via a pumping pipe 13. The piston-equipped water tank 9 is connected to a water supply pipe 10 via a high-pressure water pump 7. The piston-equipped water tank 9 is annular, located on the side of the outer cylinder 1 furthest from the fluidized solidified soil, and connected to the pumping pipe 13. It stores the collected condensate, enabling water reuse and reducing water consumption. The cooperation between the piston-equipped water tank 9 and the high-pressure water pump 7 ensures that water is ejected in the form of a high-pressure jet, enhancing the hydraulic cutting force and improving the breaking effect on the fluidized solidified soil. Furthermore, the entire circulation process is completed inside the device, further demonstrating the advantage of the device requiring no external water source.

[0040] In one embodiment of the present invention, a jet valve 8 is provided between the piston-equipped water tank 9 and the high-pressure water pump 7 to control the water flow out of the piston-equipped water tank 9; when jet cutting is not required, the jet valve 8 is closed to facilitate the movement of the piston in the piston-equipped water tank 9 for water recovery; when jet cutting is required, the jet valve 8 is opened, and the high-pressure water pump 7 pumps out the water in the piston-equipped water tank 9 and pressurizes it before spraying it out from the nozzle 11.

[0041] In a further optimized design, the inner wall of the inner cylinder 2 is equipped with several condenser fins 18, which assist in the condensation of water vapor within the inner cavity of the inner cylinder 2. (See attached diagram.) Figure 5As shown, the condenser plate 18 is disposed on the inner wall of the inner cylinder 2, increasing the contact area between the inner cavity of the inner cylinder 2 and water vapor. It is directly connected to the cold end of the semiconductor cooling chip 16, enabling rapid transfer of low temperature, accelerating water vapor liquefaction, shortening condensation time, and improving water recovery efficiency. Simultaneously, the condenser plate 18 and the inner cylinder 2 form a closed space, guiding condensate along the surface of the condenser plate 18 to the bottom, and then through the water pipe 13 into the piston-equipped water tank 9. This prevents condensate from flowing freely within the inner cylinder 2, thus avoiding incomplete recovery and ensuring the stability of the water supply to the water circulation component. Furthermore, the piston structure actively controls the water delivery speed and volume from the piston-equipped water tank 9 to the high-pressure water pump 7. Combined with the pressurization function of the high-pressure water pump 7, this ensures stable water pressure delivered to the nozzle 11, preventing fluctuations in cutting force due to water volume variations and ensuring the continuity of the demolition operation.

[0042] Further optimization of the scheme: the combined cooling and heating component includes several semiconductor cooling chips 16 embedded in the inner cylinder 2. The cold end of the semiconductor cooling chip 16 extends into the inner cavity of the inner cylinder 2 and is connected to the heat exchange plate 21 via heat pipe 19 for heat exchange. The hot end of the semiconductor cooling chip 16 extends out of the inner cylinder 2 and is fitted with a heat sink 17 for auxiliary heating. The semiconductor cooling chip 16 achieves the dual functions of condensing water vapor in the inner cavity of the inner cylinder 2 and heating the fluidized solidified soil. The cold end of the semiconductor cooling chip 16 provides a low temperature to the heat exchange plate 21 through the heat pipe 19 to freeze the fluidized solidified soil, while the hot end releases heat to the outside through the heat sink to heat the fluidized solidified soil. Only a single component is needed to complete both temperature regulation functions, simplifying the device structure and reducing energy consumption. The heat pipe 19 has excellent thermal conductivity and can quickly transfer the low temperature of the cold end to the heat exchange plate 21 to ensure rapid freezing of the fluidized solidified soil. The heat sink 17 increases the heat dissipation area of ​​the hot end, accelerates the heat transfer to the fluidized solidified soil, and improves the heating and water loss efficiency.

[0043] In one embodiment of the present invention, the outer wall of the heat pipe 19 is wrapped with a heat insulation material 20 to enhance the heat insulation effect, thereby preventing water vapor from contacting the outer wall of the heat pipe 19 and improving the energy utilization rate of the device.

[0044] Further optimizing the design, the combined cooling and heating system also includes an electric heating module 15 installed inside the outer cylinder 1. The electric heating module 15 is correspondingly positioned to a motor fan module 14 installed inside the outer cylinder 1. The motor fan module 14 blows heat from the electric heating module 15 or the heat sink 17 to heat the fluidized solidified soil on the outer side of the outer cylinder 1 wall. In addition to the heat dissipation from the hot end of the semiconductor cooling chip 16, the electric heating module 15 serves as an extra heat source. The heating power can be adjusted according to the moisture content and strength of the fluidized solidified soil, rapidly increasing its temperature, accelerating pore water evaporation, and shortening the time for water loss and damage. The motor fan converts the heat from the electric heating module 15 and the heat sink fins into a directional hot airflow, ensuring that the heat is evenly distributed to the fluidized solidified soil around the outer cylinder 1, preventing incomplete demolition due to insufficient local heating. This heat can also be used in the subsequent freeze-thaw cycle thawing step, improving operational efficiency.

[0045] In a further optimized design, a connecting plate 4 is fixedly attached to the end of the outer cylinder 1 facing the fluidized solidified soil. The connecting plate 4 is connected to a connecting cylinder 5 that controls the communication between the inner cylinder 2 and the outside. A guide plate 6 is fixedly attached to the end of the connecting plate 4 away from the outer cylinder 1. The heat pipe 19 passes through the guide plate 6 and connects to the heat exchange plate 21 for heat exchange. The connecting plate 4 and the connecting cylinder 5 cooperate to achieve a stable connection between the heads of the inner and outer cylinders 1. At the same time, the reflux valve 22 set in the connecting cylinder 5 controls the communication between the inner cylinder 2 and the outside, ensuring that water vapor only enters the inner cylinder 2 when condensation is required, avoiding heat or cold leakage. Meanwhile, the guide plate 6 provides support and positioning for the heat pipe 19, preventing the heat pipe 19 from shifting due to vibration during operation. In addition, the heat pipe 19 passes through the guide plate 6 and connects directly to the heat exchange plate 21, reducing the loss of cold energy during the transfer process and ensuring refrigeration efficiency.

[0046] To further optimize the design, several defrosting valves 23 are installed on the guide plate 6, connecting the spaces on both the inner and outer sides of the guide plate 6. The defrosting valves 23 control the airflow direction. During defrosting, the defrosting valves 23 open, allowing the hot airflow from the motor fan module 14 to enter the freezing zone where the heat exchange plate 21 is located, rapidly melting the frozen fluidized solidified soil and completing the freeze-thaw cycle, accelerating the destruction of the cemented structure of the fluidized solidified soil. During freezing, the return valve 22 opens, and the defrosting valves 23 close, preventing the hot airflow from entering the working space where the heat exchange plate 21 is located, ensuring a low-temperature environment during condensation and avoiding heat interference. When open, the hot airflow can be quickly introduced, allowing switching between freezing and defrosting modes without disassembling the device, improving operational flexibility.

[0047] To further optimize the design, a positioning plate 3 is installed at the end of the outer cylinder 1 furthest from the fluidized solidified soil to position the outer cylinder 1. The positioning plate 3 can be locked at the opening of the cavity in the fluidized solidified soil to ensure that cutting, freezing, and other operations are always applied to the target area, and to prevent hot airflow from flowing outward from the outer wall of the outer cylinder 1. At the same time, the positioning plate 3 can quickly determine the insertion depth of the device, and when the working position needs to be adjusted, the device can be easily removed or moved with the help of the positioning plate 3, reducing the difficulty of operation and improving the convenience of construction.

[0048] This invention has been optimized and innovated in the following aspects:

[0049] First, to achieve non-disturbance removal of the fluidized solidified soil, the device of this invention is placed in the hardened fluidized solidified soil, and the motor fan module 14 and the semiconductor cooling chip 16 at the tail of the device are turned on. The hot end of the semiconductor cooling chip 16 generates heat, which is then brought into contact with the fluidized solidified soil through the motor fan module 14. The fluidized solidified soil begins to lose water. After water loss, the matrix suction in the fluidized solidified soil increases, and tensile stress is generated in the solidified soil. As the pore water in the fluidized solidified soil continues to be lost, the matrix suction in the soil can reach more than 10 MPa. However, the 28-day strength of commonly used fluidized solidified soil in engineering is mostly in the range of 0.3 MPa-1 MPa. Furthermore, due to the well-developed pores of the fluidized solidified soil, the cementation structure between soil particles is destroyed under the action of huge matrix suction. At this time, the fluidized solidified soil loses its mechanical properties under the action of high matrix suction and is in a loose state.

[0050] Secondly, the pore water in the fluidized solidified soil evaporates after being heated. The return valve 22 on the connecting cylinder 5 is in the open state. The airflow generated by the motor fan module 14 carries water vapor through the return valve 22 at the connecting cylinder 5 and enters the condensation channel composed of the inner cylinder 2 and the condenser plate 18. When the airflow comes into contact with the condenser plate 18, the water vapor condenses into water and flows into the space composed of the condenser plate 18 and the inner cylinder 2. It is then stored in the piston-equipped water tank 9 through the water pumping pipe. The high-pressure water pump 7 pressurizes the condensate to form a high-pressure jet, which is sprayed through the nozzle 11 onto the loose fluidized solidified soil. The cemented structure in the fluidized solidified soil is destroyed under the action of high matrix suction and sprayed by the high-pressure jet, forming mud and flowing out.

[0051] Finally, when the device is in use, the cross-shaped heat exchange plate 21 at the head is inserted into the fluidized solidified soil. When the semiconductor cooling chip 16 is working, the defrosting valve 23 on the guide plate 6 is in the closed state. The low temperature generated by the cold end of the semiconductor cooling chip 16 is transferred into the fluidized solidified soil through the heat pipe 19. Since there is a large amount of pore water in the pores of the fluidized solidified soil, the pore water freezes after losing temperature, generating a frost heave force on the fluidized solidified soil. After the fluidized solidified soil around the heat exchange plate 21 is frozen, the return valve 22 on the connecting cylinder 5 is closed, and the defrosting valve 23 on the guide plate 6 is opened. 3. Turn off the semiconductor cooling chip 16 and turn on the heating function of the combined cooling and heating system. At this time, the hot air flows through the defrosting valve 23 at the guide plate 6 and comes into contact with the frozen fluidized solidified soil. The fluidized solidified soil thaws after being heated, allowing it to undergo a freeze-thaw cycle. Due to the well-developed pores and abundant pore water in the fluidized solidified soil, the cementation structure of the fluidized solidified soil is destroyed after the freeze-thaw cycle. The originally hardened fluidized solidified soil turns into mud and flows out. At this time, the device in this invention can continue to advance into the depth of the fluidized solidified soil to break it up.

[0052] Specific examples:

[0053] Excavate a hole in the fluidized solidified soil that needs to be broken up, and insert the heat exchange plate 21 into the bottom of the hole.

[0054] Open the reflux valve 22, close the defrost valve 23, open the semiconductor cooling chip 16, and open the motor fan module 14. The fluidized solidified soil on the outside of the outer cylinder 1 loses water. After the water vapor passes through the reflux valve 22, it condenses at the condenser plate 18 and remains inside the device. The fluidized solidified soil at the bottom of the cave freezes.

[0055] Close the reflux valve 22, open the jet valve 8, and close the semiconductor cooling chip 16. The condensate is fed into the high-pressure water pump 7 by the movement of the piston in the piston-equipped water tank 9. After the water is pressurized, it is sprayed out through the nozzle 11. The loose, fluidized solidified soil on the side wall turns into mud and flows out under the scouring of the high-pressure water.

[0056] Open the defrost valve 23 and turn on the electric heating module 15. The hot air flows through the defrost valve 23 into the space where the heat exchange plate 21 is located. The originally frozen fluidized solidified soil thaws. After experiencing the freeze-thaw cycle, the structure of the fluidized solidified soil is destroyed and it flows out as a slurry.

[0057] Repeat the above steps to achieve non-disturbance demolition of fluidized solidified soil.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for non-disturbance breaking up of fluidized solidified soil without requiring an external water source, characterized in that, include: The outer cylinder (1) is provided with a cutting assembly for hydraulically cutting the fluidized solidified soil on its outer wall. The cutting assembly is connected to a water circulation assembly located inside the outer cylinder (1). The water circulation assembly is used to recover the water contained in the fluidized solidified soil. The inner cylinder (2) is coaxially arranged inside the outer cylinder (1). A combined cooling and heating assembly is provided on the inner cylinder (2). The cooling end of the combined cooling and heating assembly is located in the inner cavity of the inner cylinder (2) and is used to condense and recover water vapor. The hot end of the combined cooling and heating assembly faces the outer cylinder (1) and is used to heat and dehydrate the fluidized solidified soil on the outside of the outer cylinder (1). Heat exchange plate (21), the heat exchange plate (21) is disposed at the end of the outer cylinder (1) and inserted into the fluidized solidified soil, the heat exchange plate (21) is connected to the combined cooling and heating assembly to freeze the fluidized solidified soil; The cutting assembly includes a water supply pipe (10) connected to the water circulation assembly. A number of nozzles (11) are provided on the water supply pipe (10). The nozzles (11) face the outer wall of the outer cylinder (1). The water flow sprayed out washes away the fluidized solidified soil that has lost its mechanical properties, so that it forms mud. The water circulation assembly includes a piston-equipped water tank (9) disposed in the inner cavity of the outer cylinder (1). The piston-equipped water tank (9) collects the condensed water in the inner cylinder (2) through a water pumping pipe (13). The piston-equipped water tank (9) is connected to the water supply pipe (10) through a high-pressure water pump (7). The combined cooling and heating assembly includes several semiconductor cooling chips (16) embedded in the inner cylinder (2). The cold end of the semiconductor cooling chip (16) extends into the inner cavity of the inner cylinder (2) and is connected to the heat exchange plate (21) through a heat pipe (19). The hot end of the semiconductor cooling chip (16) extends out of the inner cylinder (2) and is fitted with a heat sink (17) for auxiliary heat dissipation. The outer cylinder (1) is fixedly connected to a connecting plate (4) at one end facing the fluidized solidified soil. The connecting plate (4) is connected to a connecting cylinder (5) that controls the communication between the inner cylinder (2) and the outside. The connecting plate (4) is fixedly connected to a guide plate (6) at one end away from the outer cylinder (1). The heat pipe (19) passes through the guide plate (6) and is connected to the heat exchange plate (21) for heat exchange. The guide plate (6) is provided with several defrosting valves (23), and the defrosting valves (23) connect the spaces on the inside and outside sides of the guide plate (6).

2. The device for non-disturbance breaking of fluidized solidified soil without the need for an external water source, as described in claim 1, is characterized in that: The outer wall of the outer cylinder (1) is provided with a plurality of spray holes (12), and the spray holes (12) are correspondingly arranged with the nozzle (11). The water sprayed from the nozzle (11) passes through the spray holes (12) to wash the fluidized solidified soil that has lost its mechanical properties.

3. The device for non-disturbance breaking of fluidized solidified soil without the need for an external water source as described in claim 1, characterized in that: The inner wall of the inner cylinder (2) is provided with a number of condensing plates (18), which assist in the condensation of water vapor in the inner cavity of the inner cylinder (2).

4. The device for non-disturbance breaking of fluidized solidified soil without the need for an external water source according to claim 1, characterized in that: The combined cooling and heating assembly also includes an electric heating module (15) disposed in the inner cavity of the outer cylinder (1). The electric heating module (15) is correspondingly disposed in the inner cavity of the outer cylinder (1) and the electric fan module (14) blows the heat from the electric heating module (15) or the heat sink (17) to heat the fluidized solidified soil on the outer side of the outer cylinder (1).

5. The device for non-disturbance breaking of fluidized solidified soil without the need for an external water source according to claim 1, characterized in that: A positioning plate (3) is provided at the end of the outer cylinder (1) away from the fluidized solidified soil to position the outer cylinder (1) and prevent hot air from flowing out from the outer side of the cylinder wall at the tail of the outer cylinder (1).

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